wxWidgets/misc/schema/xrc_schema.rnc

#
# RELAX NG schema for XRC files.
#
# See http://docs.wxwidgets.org/trunk/overview_xrcformat.html for freeform
# description of the format.
#
#
#  Extending the grammar
# -----------------------
#
# The grammar defined below validates all builtin <object> classes. Because the
# XRC format is extensible, it allows any content in <object> nodes that have
# non-builtin class.
#
# This can be customized by overriding the 'customClasses' rule in the grammar
# when including it from another custom grammar file.
#
# For example, if you wish to validate that only wx's builtin classes are used,
# you can disallow any custom <object>s (see xrc_schema_builtin_only.rnc):
#
#     include "xrc_schema.rnc" {
#         customClasses = notAllowed
#     }
#
# You can also add validation for custom classes:
#
#     include "xrc_schema.rnc" {
#         customClasses = myExtensionClasses
#     }
#
#     myExtensionClasses = (MyFoo | MyBar | ...)
#     MyFoo =
#         element object {
#             attribute class { "MyFoo" },
#             stdObjectNodeAttributes,
#             ...
#         }
#     ...
#

default namespace = "http://www.wxwidgets.org/wxxrc"
namespace xrc = "http://www.wxwidgets.org/wxxrc"

start =
    element resource {
        # Versions 2.3.0.1 and 2.5.3.0 differ only in how is '\\' interpreted
        # in textual content. That's not even validated here, so we accept
        # both.  Additionally, even though the attribute is optional in the
        # spec, we require it here; in other words, the schema cannot be used
        # to validate XRC files from previous millennium.
        attribute version { "2.3.0.1" | "2.5.3.0" },

        toplevelObjectNode*
    }


# IMPLEMENTATION NOTES:
#
# The guiding principle for writing this schema is to validate as much as we
# possible can, but without introducing false negatives; it is not acceptable
# to fail validation of a valid (per the human-readable XRC spec) XRC file.
#
# Unfortunately, there are some noteworthy complications when describing the
# XRC format with a formal schema. Working around them results in uglier and
# overly permissive schema:
#
#
# (1) The biggest issue is with the 'platform' attribute, which may be used on
# _any_ node in an XRC document. There's no way to specify "universal"
# attributes that can be placed anywhere in RELAX NG, so we must add the
# attribute everywhere. The 'platform' grammar rule is used for this and it has
# an alias, '_', for reduced verbosity. Typical use:
#
#       element size   {_, t_size }? &
#
#
# (2) The other 'platform'-related issue is that it messes up cardinality of
# properties elements. Properties can only be specified once, so the two forms
# for describing properties would be
#
#       1. element size {_, t_size }?   # optional property
#       2. element size {_, t_size }    # required property
#
# (Fortunately, all XRC properties are optional, se the second case is a
# non-issue and can be safely ignored. It is nevertheless briefly mentioned
# below for explanatory purposes.)
#
# But this is problematic with 'platform', because it's reasonable (and,
# indeed, done in the wild) to set properties differently for different
# platforms:
#
#       <object class="wxMenuItem" name="menu_new_from_pot">
#           <label platform="win">New catalog from POT file...</label>
#           <label platform="unix|mac">New Catalog from POT File...</label>
#       </object>
#
# But we now have the 'label' property _twice_ and validation fails. The
# simplest fix is to change the cardinality of properties to allow this [A]:
#
#       1. element size {_, t_size }*    # optional property (0 or more times)
#       2. element size {_, t_size }+    # required property (at least once)
#
# Of course, this is too lax and allows invalid (but gracefully handled by
# wxXmlResource) markup like this:
#
#       <object class="wxMenuItem" name="menu_new_from_pot">
#           <label>Something</label>
#           <label>Else</label>
#       </object>
#
# We could make this better by splitting the property declaration into two, one
# for the case with 'platform' and one for without [B]:
#
#       (element size { t_size } | element size { attribute platform{string}, t_size }+)
#
# But this is verbose and unreadable with the amount of properties present in
# the schema. Instead, we use the more-forbidding version and annotate
# properties with 'p' annotation (for "property") to mark these uses of * as
# special and enable post-processing of the schema.
#
# The value of the annotation is normally just "o" (for "optional" -- remember
# that there are no required properties) to indicate optional properties.
#
# Since we have the annotation anyway, we take advantage of it to indicate
# properties that are strictly speaking optional, but should almost always be
# specified, even though they don't _have_ to be. A typical example would be
# wxStaticText's label: it very rarely makes sense to omit it, but usually
# doesn't. Such properties are indicated with the "important" value of the
# annotation:
#
#       [xrc:p="o"] element checked { t_bool }*        # optional
#       [xrc:p="important"] element label { t_text }*  # should be provided
#
# This makes it possible to implement tools that translate this schema into a
# variant that uses [B].
#

toplevelObjectNode = (objectRef | builtinToplevelClasses | customClasses)
windowNode =         (objectRef | builtinWindowClasses | customClasses)
sizerNode  =         (objectRef | builtinSizerClasses | customClasses)

# The following three lists must be updated when a new class is added
# to this file.

builtinToplevelClasses =
    ( builtinWindowClasses
    | idsRange
    | wxBitmap_or_wxIcon
    | wxMenuBar
    | wxMenu
    )

builtinWindowClasses =
    ( unknown
    | wxAnimationCtrl
    | wxAuiNotebook
    | wxAuiToolBar
    | wxBannerWindow
    | wxBitmapButton
    | wxBitmapComboBox
    | wxBitmapToggleButton
    | wxButton
    | wxCalendarCtrl
    | wxCheckBox
    | wxCheckListBox
    | wxChoice
    | wxChoicebook
    | wxCommandLinkButton
    | wxCollapsiblePane
    | wxColourPickerCtrl
    | wxComboBox
    | wxComboCtrl
    | wxDatePickerCtrl
    | wxDialog
    | wxDirPickerCtrl
    | wxEditableListBox
    | wxFileCtrl
    | wxFilePickerCtrl
    | wxFontPickerCtrl
    | wxFrame
    | wxGauge
    | wxGenericDirCtrl
    | wxGrid
    | wxHtmlWindow
    | wxHyperlinkCtrl
    | wxListBox
    | wxListbook
    | wxListCtrl
    | wxMDIParentFrame
    | wxNotebook
    | wxOwnerDrawnComboBox
    | wxPanel
    | wxPropertySheetDialog
    | wxRadioButton
    | wxRadioBox
    | wxRibbonBar
    | wxRibbonButtonBar
    | wxRibbonControl
    | wxRibbonGallery
    | wxRibbonPage
    | wxRibbonPanel
    | wxRichTextCtrl
    | wxScrollBar
    | wxScrolledWindow
    | wxSimpleHtmlListBox
    | wxSlider
    | wxSpinButton
    | wxSpinCtrl
    | wxSplitterWindow
    | wxSearchCtrl
    | wxStatusBar
    | wxStaticBitmap
    | wxStaticBox
    | wxStaticLine
    | wxStaticText
    | wxTextCtrl
    | wxTimePickerCtrl
    | wxToggleButton
    | wxToolBar
    | wxToolbook
    | wxTreeCtrl
    | wxTreebook
    | wxWizard
    )

builtinSizerClasses =
    ( wxBoxSizer
    | wxStaticBoxSizer
    | wxGridSizer
    | wxFlexGridSizer
    | wxGridBagSizer
    | wxWrapSizer
    | wxStdDialogButtonSizer
    )

builtinClassesNames =
    ( "wxBitmap"
    | "wxIcon"
    | "wxMenuBar"
    | "wxMenu"

    | "unknown"

    | "wxAnimationCtrl"
    | "wxAuiNotebook"
    | "wxAuiToolBar"
    | "wxBannerWindow"
    | "wxBitmapButton"
    | "wxBitmapComboBox"
    | "wxBitmapToggleButton"
    | "wxButton"
    | "wxCalendarCtrl"
    | "wxCheckBox"
    | "wxCheckListBox"
    | "wxChoice"
    | "wxChoicebook"
    | "wxCommandLinkButton"
    | "wxCollapsiblePane"
    | "wxColourPickerCtrl"
    | "wxComboBox"
    | "wxComboCtrl"
    | "wxDatePickerCtrl"
    | "wxDialog"
    | "wxDirPickerCtrl"
    | "wxEditableListBox"
    | "wxFileCtrl"
    | "wxFilePickerCtrl"
    | "wxFontPickerCtrl"
    | "wxFrame"
    | "wxGauge"
    | "wxGenericDirCtrl"
    | "wxGrid"
    | "wxHtmlWindow"
    | "wxHyperlinkCtrl"
    | "wxListBox"
    | "wxListbook"
    | "wxListCtrl"
    | "wxMDIParentFrame"
    | "wxNotebook"
    | "wxOwnerDrawnComboBox"
    | "wxPanel"
    | "wxPropertySheetDialog"
    | "wxRadioButton"
    | "wxRadioBox"
    | "wxRibbonBar"
    | "wxRibbonButtonBar"
    | "wxRibbonControl"
    | "wxRibbonGallery"
    | "wxRibbonPage"
    | "wxRibbonPanel"
    | "wxRichTextCtrl"
    | "wxScrollBar"
    | "wxScrolledWindow"
    | "wxSimpleHtmlListBox"
    | "wxSlider"
    | "wxSpinButton"
    | "wxSpinCtrl"
    | "wxSplitterWindow"
    | "wxSearchCtrl"
    | "wxStatusBar"
    | "wxStaticBitmap"
    | "wxStaticBox"
    | "wxStaticLine"
    | "wxStaticText"
    | "wxTextCtrl"
    | "wxTimePickerCtrl"
    | "wxToggleButton"
    | "wxToolBar"
    | "wxToolbook"
    | "wxTreeCtrl"
    | "wxTreebook"
    | "wxWizard"

    | "wxBoxSizer"
    | "wxStaticBoxSizer"
    | "wxGridSizer"
    | "wxFlexGridSizer"
    | "wxGridBagSizer"
    | "wxWrapSizer"
    | "wxStdDialogButtonSizer"
    )

# class names not used at toplevel, only within something else
builtinNestedClassesNames =
    ( "wxMenuItem"
    | "separator"
    | "break"
    | "space"
    | "label"
    | "tool"
    | "panewindow"
    | "notebookpage"
    | "choicebookpage"
    | "listbookpage"
    | "treebookpage"
    | "propertysheetpage"
    | "ownerdrawnitem"
    | "listcol"
    | "listitem"
    | "wxMDIChildFrame"
    | "page" | "panel" | "button" | "item"  # wxRibbon classes
    | "wxWizardPage"
    | "wxWizardPageSimple"
    )

allPossibleBuiltinClassNames = (builtinClassesNames | builtinNestedClassesNames)


# This grammar rule can be used to plug in any extensions used in an
# application. By default, it allows any content under custom <object>
# nodes.
customClasses =
    element object {
        attribute class { string - allPossibleBuiltinClassNames } &
        stdObjectNodeAttributes &
        anyXMLContent*
    }

# Helper for specifying arbitrary content.
anyXMLContent =
  element * {
    (attribute * { text }
     | text
     | anyXMLContent)*
  }


# Annotations used to mark special kinds of content:
#
# [xrc:p] marks properties, with two possible values:
#
#     [xrc:p="o"]           for normal/optional properties
#     [xrc:p="important"]   for important properties that
#                           should almost always be set
#


# All <object> nodes (except the pseudo-classes) have these attributes.
stdObjectNodeAttributes =
        attribute subclass { t_identifier }? &
        attribute name     { t_identifier }? &
        platform

# All (almost) wxWindow-derived objects have these properties.
stdWindowProperties =
        [xrc:p="o"] element pos     {_, t_position }* &
        [xrc:p="o"] element size    {_, t_size }* &
        [xrc:p="o"] element style   {_, t_style }* &
        [xrc:p="o"] element exstyle {_, t_style }* &
        [xrc:p="o"] element fg      {_, t_colour }* &
        [xrc:p="o"] element ownfg   {_, t_colour }* &
        [xrc:p="o"] element bg      {_, t_colour }* &
        [xrc:p="o"] element ownbg   {_, t_colour }* &
        [xrc:p="o"] element enabled {_, t_bool }* &
        [xrc:p="o"] element focused {_, t_bool }* &
        [xrc:p="o"] element hidden  {_, t_bool }* &
        [xrc:p="o"] element tooltip {_, t_text }* &
        [xrc:p="o"] element font    {_, t_font }* &
        [xrc:p="o"] element ownfont {_, t_font }* &
        [xrc:p="o"] element help    {_, t_text }*

platform =
        attribute platform {
            xsd:string { pattern = "(win|mac|unix)( *\| *(win|mac|unix))*" }
        }?
# shorthand alias for 'platform' for use in properties definitions and
# elsewhere where 'platform' would be too verbose
_ = platform


# Basic data types.

t_identifier = string
t_text       = string
t_string     = string
t_bool       = "1" | "0"
t_integer    = xsd:integer
t_unsigned   = xsd:nonNegativeInteger
t_float      = xsd:float
t_direction  = "wxLEFT" | "wxRIGHT" | "wxTOP" | "wxBOTTOM"
t_style      = xsd:string { pattern = "(wx[A-Z0-9_]+)( *\| *(wx[A-Z0-9_]+))*" }

t_url        = string
t_colour     = xsd:string { pattern = "#[0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z][0-9a-zA-Z]" } |
               xsd:string { pattern = "[^#].*" }
t_position   = t_size
t_size       = xsd:string { pattern = "(-?\d+),(-?\d+)d?" }
t_dimension  = xsd:string { pattern = "(-?\d+)d?" }

t_bitmap     = t_url?,
               (
                   attribute stock_id { t_identifier},
                   attribute stock_client { t_identifier}?
               )?

t_font       = (
                   [xrc:p="o"] element size         {_, t_integer }* &
                   [xrc:p="o"] element style        {_, ("normal" | "italic" | "slant") }* &
                   [xrc:p="o"] element weight       {_, ("normal" | "bold" | "light") }* &
                   [xrc:p="o"] element family       {_, ("roman" | "script" | "decorative" | "swiss" |
                                                         "modern" | "teletype") }* &
                   [xrc:p="o"] element underlined   {_, t_bool }* &
                   [xrc:p="o"] element face         {_, t_text }* &
                   [xrc:p="o"] element encoding     {_, t_text }* &
                   [xrc:p="o"] element sysfont      {_, ("wxSYS_OEM_FIXED_FONT" | "wxSYS_ANSI_FIXED_FONT" |
                                                         "wxSYS_ANSI_VAR_FONT" | "wxSYS_SYSTEM_FONT" |
                                                         "wxSYS_DEVICE_DEFAULT_FONT" | "wxSYS_SYSTEM_FIXED_FONT" |
                                                         "wxSYS_DEFAULT_GUI_FONT") }* &
                   [xrc:p="o"] element inherit      {_, t_bool }* &
                   [xrc:p="o"] element relativesize {_, t_float }*
               )

t_imagelist  = (
                   [xrc:p="o"] element mask {_, t_bool }* &
                   [xrc:p="o"] element size {_, t_size }* &
                   element bitmap {_, t_bitmap }+
               )

t_list_of_numbers = xsd:string { pattern = "\d+(,\d+)*" }


#
# Handlers for non-<object> content:
#

idsRange =
    element ids-range {
        attribute name  { t_identifier },
        attribute size  { t_integer }?,
        attribute start { t_integer }?
    }


objectRef =
    element object_ref {
        stdObjectNodeAttributes &
        attribute ref { t_identifier } &
        anyXMLContent*
    }


#
# Handlers for specific <object> classes follow:
#

unknown =
    element object {
        attribute class { "unknown" } &
        attribute name  { t_identifier } &
        platform &
        stdWindowProperties
    }


wxBitmap_or_wxIcon =
    element object {
        attribute class { "wxBitmap" | "wxIcon" } &
        stdObjectNodeAttributes &
        t_bitmap
    }


wxAnimationCtrl =
    element object {
        attribute class { "wxAnimationCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element animation       {_, t_url }* &
        [xrc:p="o"] element inactive-bitmap {_, t_bitmap }*
    }


wxAuiNotebook =
    element object {
        attribute class { "wxAuiNotebook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        (wxAuiNotebook_notebookpage | objectRef)*
    }

wxAuiNotebook_notebookpage =
    element object {
        attribute class  { "notebookpage" } &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element bitmap   {_, t_bitmap }* &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxAuiToolBar =
    element object {
        attribute class { "wxAuiToolBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element bitmapsize        {_, t_size }* &
        [xrc:p="o"] element margins           {_, t_size }* &
        [xrc:p="o"] element packing           {_, t_integer }* &
        [xrc:p="o"] element separation        {_, t_integer }* &
        [xrc:p="o"] element dontattachtoframe {_, t_bool }* &
        (
            windowNode |
            wxToolBar_tool |
            wxAuiToolBar_label |
            element object { attribute class { "separator" }, platform } |
            element object { attribute class { "space" } &
                platform &
                [xrc:p="o"] element width {_, t_integer }* &
                [xrc:p="o"] element proportion {_, t_integer }*
            }
        )*
    }

wxAuiToolBar_label =
    element object {
        attribute class { "label" } &
            platform &
            attribute name { t_identifier }? &
            [xrc:p="important"] element label {_, t_text }* &
            [xrc:p="o"]         element width {_, t_integer }*
        }

wxBannerWindow =
    element object {
        attribute class { "wxBannerWindow" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element direction {_, t_direction }* &
        [xrc:p="o"](
           element bitmap {_, t_bitmap } |
           (
               element gradient-start {_, t_colour} &
               element gradient-end {_, t_colour }
           )
        )* &
        [xrc:p="o"] element title     {_, t_text }* &
        [xrc:p="o"] element message   {_, t_text }*
    }


wxBitmapButton =
    element object {
        attribute class { "wxBitmapButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element default  {_, t_bool }* &
        [xrc:p="important"] element bitmap {_, t_bitmap }* &
        [xrc:p="o"] element selected {_, t_bitmap }* &
        [xrc:p="o"] element focus    {_, t_bitmap }* &
        [xrc:p="o"] element disabled {_, t_bitmap }* &
        [xrc:p="o"] element hover    {_, t_bitmap }*
    }


wxBitmapComboBox =
    element object {
        attribute class { "wxBitmapComboBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection {_, t_integer }* &
        [xrc:p="o"] element value     {_, t_text }* &
        (wxBitmapComboBox_ownerdrawnitem | objectRef)*
    }

wxBitmapComboBox_ownerdrawnitem =
    element object {
        attribute class  { "ownerdrawnitem" } &
        platform &
        [xrc:p="important"] element text {_, t_text }* &
        [xrc:p="o"] element bitmap   {_, t_bitmap }*
    }


wxBitmapToggleButton =
    element object {
        attribute class { "wxBitmapToggleButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element bitmap {_, t_bitmap }* &
        [xrc:p="o"] element checked {_, t_bool }*
    }


wxButton =
    element object {
        attribute class { "wxButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element label          {_, t_text }* &
        [xrc:p="o"] element bitmap         {_, t_bitmap }* &
        [xrc:p="o"] element bitmapposition {_, t_direction }* &
        [xrc:p="o"] element default        {_, t_bool }*
    }


wxCalendarCtrl =
    element object {
        attribute class { "wxCalendarCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties
    }


wxCheckBox =
    element object {
        attribute class { "wxCheckBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element checked {_, t_bool }*
    }


wxCheckListBox =
    element object {
        attribute class { "wxCheckListBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        element content {
            platform,
            element item {
                attribute checked { t_bool }?,
                t_text
            }*
        }?
    }


wxChoice =
    element object {
        attribute class { "wxChoice" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection {_, t_integer }* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxChoicebook =
    element object {
        attribute class { "wxChoicebook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        (wxChoicebook_choicebookpage | objectRef)*
    }

wxChoicebook_choicebookpage =
    element object {
        attribute class { "choicebookpage" } &
        platform &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"](
            element bitmap {_, t_bitmap } |
            element image  {_, t_integer }
        )* &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxCommandLinkButton =
    element object {
        attribute class { "wxCommandLinkButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element note  {_, t_text }*
    }


wxCollapsiblePane =
    element object {
        attribute class { "wxCollapsiblePane" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element collapsed {_, t_bool }* &
        (wxCollapsiblePane_panewindow | objectRef)?
    }

wxCollapsiblePane_panewindow =
    element object {
        attribute class { "panewindow" } &
        platform &
        (sizerNode | windowNode)
    }


wxColourPickerCtrl =
    element object {
        attribute class { "wxColourPickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_colour }*
    }


wxComboBox =
    element object {
        attribute class { "wxComboBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection {_, t_integer }* &
        [xrc:p="o"] element value     {_, t_string }* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxComboCtrl =
    element object {
        attribute class { "wxComboCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_string }*
    }


wxDatePickerCtrl =
    element object {
        attribute class { "wxDatePickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties
    }


wxDialog =
    element object {
        attribute class { "wxDialog" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title    {_, t_text }* &
        [xrc:p="o"] element icon     {_, t_bitmap }* &
        [xrc:p="o"] element centered {_, t_bool }* &
        (sizerNode | windowNode* )?
    }


wxDirPickerCtrl =
    element object {
        attribute class { "wxDirPickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value   {_, t_string }* &
        [xrc:p="important"] element message {_, t_text}*
    }


wxEditableListBox =
    element object {
        attribute class { "wxEditableListBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element label {_, t_text}* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxFileCtrl =
    element object {
        attribute class { "wxFileCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element defaultdirectory {_, t_string }* &
        [xrc:p="o"] element defaultfilename  {_, t_string }* &
        [xrc:p="o"] element wildcard         {_, t_string }*
    }


wxFilePickerCtrl =
    element object {
        attribute class { "wxFilePickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value    {_, t_string }* &
        [xrc:p="important"] element message  {_, t_text }* &
        [xrc:p="o"] element wildcard {_, t_string }*
    }


wxFontPickerCtrl =
    element object {
        attribute class { "wxFontPickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_font }*
    }


wxFrame =
    element object {
        attribute class { "wxFrame" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title    {_, t_text }* &
        [xrc:p="o"] element icon     {_, t_bitmap }* &
        [xrc:p="o"] element centered {_, t_bool }* &
        (sizerNode | windowNode* )?
    }


wxGauge =
    element object {
        attribute class { "wxGauge" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element range  {_, t_integer }* &
        [xrc:p="o"] element value  {_, t_integer }* &
        [xrc:p="o"] element shadow {_, t_dimension }* &
        [xrc:p="o"] element bezel  {_, t_dimension }*
    }


wxGenericDirCtrl =
    element object {
        attribute class { "wxGenericDirCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element defaultfolder {_, t_string }* &
        [xrc:p="o"] element filter        {_, t_text }* &
        [xrc:p="o"] element defaultfilter {_, t_integer }*
    }


wxGrid =
    element object {
        attribute class { "wxGrid" } &
        stdObjectNodeAttributes &
        stdWindowProperties
    }


wxHtmlWindow =
    element object {
        attribute class { "wxHtmlWindow" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"](
            element url       {_, t_url } |
            element htmlcode  {_, t_text }
        )* &
        [xrc:p="o"] element borders {_, t_dimension }*
    }


wxHyperlinkCtrl =
    element object {
        attribute class { "wxHyperlinkCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="important"] element url   {_, t_url }*
    }


wxListBox =
    element object {
        attribute class { "wxListBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection {_, t_integer }* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxListbook =
    element object {
        attribute class { "wxListbook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        (wxListbook_listbookpage | objectRef)*
    }

wxListbook_listbookpage =
    element object {
        attribute class { "listbookpage" } &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"](
            element bitmap {_, t_bitmap } |
            element image  {_, t_integer }
        )* &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxListCtrl =
    element object {
        attribute class { "wxListCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        [xrc:p="o"] element imagelist-small {_, t_imagelist }* &
        (wxListCtrl_listcol | wxListCtrl_listitem | objectRef)*
    }

wxListCtrl_listcol =
    element object {
        attribute class { "listcol" } &
        platform &
        [xrc:p="o"] element align   {_, ("wxLIST_FORMAT_LEFT" | "wxLIST_FORMAT_RIGHT" |
                                         "wxLIST_FORMAT_CENTRE") }* &
        [xrc:p="o"] element text    {_, t_text }* &
        [xrc:p="o"] element width   {_, t_integer }* &
        [xrc:p="o"] element image   {_, t_integer }*
    }

wxListCtrl_listitem =
    element object {
        attribute class { "listitem" } &
        platform &
        [xrc:p="o"] element align        {_, ("wxLIST_FORMAT_LEFT" | "wxLIST_FORMAT_RIGHT" |
                                              "wxLIST_FORMAT_CENTRE") }* &
        [xrc:p="o"] element bg           {_, t_colour }* &
        [xrc:p="o"] element col          {_, t_integer }* &
        [xrc:p="o"] element data         {_, t_integer }* &
        [xrc:p="o"] element font         {_, t_font }* &
        [xrc:p="o"] element state        {_, ("wxLIST_STATE_FOCUSED" | "wxLIST_STATE_SELECTED") }* &
        [xrc:p="o"] element text         {_, t_text }* &
        [xrc:p="o"] element textcolour   {_, t_colour }* &
        [xrc:p="o"](
            element bitmap   {_, t_bitmap } |
            element image    {_, t_integer }
        )* &
        [xrc:p="o"](
            element bitmap-small {_, t_bitmap } |
            element image-small  {_, t_integer }
        )*
    }


wxMDIParentFrame =
    element object {
        attribute class { "wxMDIParentFrame" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title    {_, t_text }* &
        [xrc:p="o"] element icon     {_, t_bitmap }* &
        [xrc:p="o"] element centered {_, t_bool }* &
        (wxMDIChildFrame | objectRef)*
    }

wxMDIChildFrame =
    element object {
        attribute class { "wxMDIChildFrame" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title    {_, t_text }* &
        [xrc:p="o"] element icon     {_, t_bitmap }* &
        [xrc:p="o"] element centered {_, t_bool }* &
        (sizerNode | windowNode* )?
    }


wxMenuBar =
    element object {
        attribute class { "wxMenuBar" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element style {_, t_style }* &
        (wxMenu | objectRef)*
    }

wxMenu =
    element object {
        attribute class { "wxMenu" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element label   {_, t_text }* &
        [xrc:p="o"] element style   {_, t_style }* &
        [xrc:p="o"] element help    {_, t_text }* &
        [xrc:p="o"] element enabled {_, t_bool }* &
        (
            wxMenuItem |
            wxMenu |
            objectRef |
            element object { attribute class { "separator" }, platform } |
            element object { attribute class { "break" },     platform }
        )*
    }

wxMenuItem =
    element object {
        attribute class { "wxMenuItem" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element label     {_, t_text }* &
        [xrc:p="o"] element accel     {_, t_text }* &
        [xrc:p="o"] element radio     {_, t_bool }* &
        [xrc:p="o"] element checkable {_, t_bool }* &
        [xrc:p="o"] element bitmap    {_, t_bitmap }* &
        [xrc:p="o"] element bitmap2   {_, t_bitmap }* &
        [xrc:p="o"] element help      {_, t_text }* &
        [xrc:p="o"] element enabled   {_, t_bool }* &
        [xrc:p="o"] element checked   {_, t_bool }*
    }


wxNotebook =
    element object {
        attribute class { "wxNotebook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        (wxNotebook_notebookpage | objectRef)*
    }

wxNotebook_notebookpage =
    element object {
        attribute class { "notebookpage" } &
        platform &
        [xrc:p="important"] element label {_, t_text }* &
        (
            element bitmap {_, t_bitmap } |
            element image  {_, t_integer }
        )? &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxOwnerDrawnComboBox =
    element object {
        attribute class { "wxOwnerDrawnComboBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection  {_, t_integer }* &
        [xrc:p="o"] element value      {_, t_string }* &
        [xrc:p="o"] element buttonsize {_, t_size }* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxPanel =
    element object {
        attribute class { "wxPanel" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        (sizerNode | windowNode* )?
    }


wxPropertySheetDialog =
    element object {
        attribute class { "wxPropertySheetDialog" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title    {_, t_text }* &
        [xrc:p="o"] element icon     {_, t_bitmap }* &
        [xrc:p="o"] element centered {_, t_bool }* &
        [xrc:p="o"] element buttons  {_, t_style }* &
        (wxNotebook_notebookpage | objectRef)*
    }

wxPropertySheetDialog_propertysheetpage =
    element object {
        attribute class { "propertysheetpage" } &
        platform &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element bitmap {_, t_bitmap }* &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxRadioButton =
    element object {
        attribute class { "wxRadioButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element value {_, t_bool }*
    }


wxRadioBox =
    element object {
        attribute class { "wxRadioBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element dimension {_, t_integer }* &
        [xrc:p="o"] element selection {_, t_integer }* &
        element content {
            platform,
            element item {
                platform,
                attribute tooltip  { t_string }?,
                attribute helptext { t_string }?,
                attribute enabled  { t_bool }?,
                attribute hidden   { t_bool }?,
                t_text
            }*
        }?
    }


wxRibbonBar =
    element object {
        attribute class { "wxRibbonBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element art-provider {_, ("default" | "aui" | "msw") }* &
        (wxRibbonPage | objectRef)*
    }

wxRibbonButtonBar =
    element object {
        attribute class { "wxRibbonButtonBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        (wxRibbonButtonBar_button | objectRef)*
    }

wxRibbonButtonBar_button =
    element object {
        attribute class { "button" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element hybrid                {_, t_bool }* &
        [xrc:p="o"] element disabled              {_, t_bool }* &
        [xrc:p="important"] element label         {_, t_text }* &
        [xrc:p="important"] element bitmap        {_, t_bitmap }* &
        [xrc:p="o"] element small-bitmap          {_, t_bitmap }* &
        [xrc:p="o"] element disabled-bitmap       {_, t_bitmap }* &
        [xrc:p="o"] element small-disabled-bitmap {_, t_bitmap }* &
        [xrc:p="o"] element help                  {_, t_text }*
    }

wxRibbonControl =
    element object {
        attribute class { "wxRibbonControl" } &
        attribute subclass { t_identifier } & # must be subclassed
        attribute name     { t_identifier }? &
        platform
    }

wxRibbonGallery =
    element object {
        attribute class { "wxRibbonGallery" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        (wxRibbonGallery_item | objectRef)*
    }

wxRibbonGallery_item =
    element object {
        attribute class { "item" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element bitmap {_, t_bitmap }*
    }

wxRibbonPage =
    element object {
        # unfortunately, wxRibbonXmlHandler supports "page" alias
        attribute class { "wxRibbonPage" | "page" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element label {_, t_text }* &
        [xrc:p="o"] element icon  {_, t_bitmap }* &
        (wxRibbon_anyControl | objectRef)*
    }

wxRibbonPanel =
    element object {
        # unfortunately, wxRibbonXmlHandler supports "panel" alias
        attribute class { "wxRibbonPanel" | "panel" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element label {_, t_text }* &
        [xrc:p="o"] element icon  {_, t_bitmap }* &
        (sizerNode | wxRibbon_anyControl | objectRef)*
    }

wxRibbon_anyControl = wxRibbonBar | wxRibbonButtonBar | wxRibbonControl |
                      wxRibbonGallery | wxRibbonPanel


wxRichTextCtrl =
    element object {
        attribute class { "wxRichTextCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value     {_, t_text }* &
        [xrc:p="o"] element maxlength {_, t_integer }*
    }


wxScrollBar =
    element object {
        attribute class { "wxScrollBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value     {_, t_integer }* &
        [xrc:p="o"] element range     {_, t_integer }* &
        [xrc:p="o"] element thumbsize {_, t_integer }* &
        [xrc:p="o"] element pagesize  {_, t_integer }*
    }


wxScrolledWindow =
    element object {
        attribute class { "wxScrolledWindow" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element scrollrate {_, t_size }* &
        (sizerNode | windowNode* )?
    }


wxSimpleHtmlListBox =
    element object {
        attribute class { "wxSimpleHtmlListBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element selection {_, t_integer }* &
        element content {
            platform,
            element item {_, t_text }*
        }?
    }


wxSlider =
    element object {
        attribute class { "wxSlider" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value    {_, t_integer }* &
        [xrc:p="o"] element min      {_, t_integer }* &
        [xrc:p="o"] element max      {_, t_integer }* &
        [xrc:p="o"] element pagesize {_, t_integer }* &
        [xrc:p="o"] element linesize {_, t_integer }* &
        [xrc:p="o"] element tickfreq {_, t_integer }* &
        [xrc:p="o"] element tick     {_, t_integer }* &
        [xrc:p="o"] element thumb    {_, t_integer }* &
        [xrc:p="o"] element selmin   {_, t_integer }* &
        [xrc:p="o"] element selmax   {_, t_integer }*
    }


wxSpinButton =
    element object {
        attribute class { "wxSpinButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_integer }* &
        [xrc:p="o"] element min   {_, t_integer }* &
        [xrc:p="o"] element max   {_, t_integer }*
    }


wxSpinCtrl =
    element object {
        attribute class { "wxSpinCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_integer }* &
        [xrc:p="o"] element min   {_, t_integer }* &
        [xrc:p="o"] element max   {_, t_integer }* &
        [xrc:p="o"] element base  {_, ("10" | "16") }*
    }


wxSplitterWindow =
    element object {
        attribute class { "wxSplitterWindow" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element orientation {_, ("vertical" | "horizontal") }* &
        [xrc:p="o"] element sashpos     {_, t_dimension }* &
        [xrc:p="o"] element minsize     {_, t_dimension }* &
        [xrc:p="o"] element gravity     {_, t_float }* &
        (windowNode, windowNode?) # 1 or 2 child windows
    }


wxSearchCtrl =
    element object {
        attribute class { "wxSearchCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value {_, t_text }*
    }


wxStatusBar =
    element object {
        attribute class { "wxStatusBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element fields {_, t_integer }* &
        [xrc:p="o"] element widths {_, t_list_of_numbers }* &
        [xrc:p="o"] element styles {_, xsd:string { pattern = "wxSB_(NORMAL|FLAT|RAISED|SUNKEN)(,wxSB_(NORMAL|FLAT|RAISED|SUNKEN))*" } }*
    }


wxStaticBitmap =
    element object {
        attribute class { "wxStaticBitmap" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        element bitmap {_, t_bitmap }
    }


wxStaticBox =
    element object {
        attribute class { "wxStaticBox" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }*
    }


wxStaticLine =
    element object {
        attribute class { "wxStaticLine" } &
        stdObjectNodeAttributes &
        stdWindowProperties
    }


wxStaticText =
    element object {
        attribute class { "wxStaticText" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element wrap  {_, t_dimension }*
    }


wxTextCtrl =
    element object {
        attribute class { "wxTextCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element value     {_, t_text }* &
        [xrc:p="o"] element maxlength {_, t_integer }* &
        [xrc:p="o"] element hint      {_, t_text }*
    }


wxTimePickerCtrl =
    element object {
        attribute class { "wxTimePickerCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties
    }


wxToggleButton =
    element object {
        attribute class { "wxToggleButton" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element checked {_, t_bool }*
    }


wxToolBar =
    element object {
        attribute class { "wxToolBar" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element bitmapsize        {_, t_size }* &
        [xrc:p="o"] element margins           {_, t_size }* &
        [xrc:p="o"] element packing           {_, t_integer }* &
        [xrc:p="o"] element separation        {_, t_integer }* &
        [xrc:p="o"] element dontattachtoframe {_, t_bool }* &
        (
            windowNode |
            wxToolBar_tool |
            element object { attribute class { "separator" }, platform } |
            element object { attribute class { "space" },     platform }
        )*
    }

wxToolBar_tool =
    element object {
        attribute class { "tool" } &
        stdObjectNodeAttributes &
        [xrc:p="important"] element bitmap {_, t_bitmap }* &
        [xrc:p="o"] element bitmap2  {_, t_bitmap }* &
        [xrc:p="o"] element label    {_, t_text }* &
        [xrc:p="o"] element tooltip  {_, t_text }* &
        [xrc:p="o"] element longhelp {_, t_text }* &
        [xrc:p="o"] element disabled {_, t_bool }* &
        [xrc:p="o"] element checked  {_, t_bool }* &
        [xrc:p="o"](
            element radio    {_, t_bool } |
            element toggle   {_, t_bool } |
            element dropdown {_, wxMenu? }
        )*
    }


wxToolbook =
    element object {
        attribute class { "wxToolbook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        (wxToolbook_toolbookpage | objectRef)*
    }

wxToolbook_toolbookpage =
    element object {
        attribute class { "toolbookpage" } &
        platform &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"](
            element bitmap {_, t_bitmap } |
            element image  {_, t_integer }
        )* &
        [xrc:p="o"] element selected {_, t_bool }* &
        windowNode
    }


wxTreeCtrl =
    element object {
        attribute class { "wxTreeCtrl" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }*
    }


wxTreebook =
    element object {
        attribute class { "wxTreebook" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element imagelist {_, t_imagelist }* &
        (wxTreebook_treebookpage | objectRef)*
    }

wxTreebook_treebookpage =
    element object {
        attribute class { "treebookpage" } &
        platform &
        [xrc:p="important"] element depth {_, t_integer }* &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"](
            element bitmap {_, t_bitmap } |
            element image  {_, t_integer }
        )* &
        [xrc:p="o"] element selected {_, t_bool }* &
        [xrc:p="o"] element expanded {_, t_bool }* &
        windowNode
    }


wxWizard =
    element object {
        attribute class { "wxWizard" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element title  {_, t_text }* &
        [xrc:p="o"] element bitmap {_, t_bitmap }* &
        (wxWizardPage_any | objectRef)*
    }

wxWizardPage_any =
    element object {
        attribute class { "wxWizardPage" | "wxWizardPageSimple" } &
        stdObjectNodeAttributes &
        stdWindowProperties &
        [xrc:p="o"] element bitmap {_, t_bitmap }* &
        (sizerNode | windowNode* )?
    }




wxSizer_item =
    element object {
        (
            (
                attribute class { "spacer" } &
                [xrc:p="o"] element size {_, t_size }*
            )
            |
            (
                attribute class { "sizeritem" } &
                (windowNode | sizerNode)
            )
        ) &
        stdObjectNodeAttributes &
        [xrc:p="o"] element option   {_, t_integer }* &
        [xrc:p="o"] element border   {_, t_dimension }* &
        [xrc:p="o"] element minsize  {_, t_size }* &
        [xrc:p="o"] element ratio    {_, t_size }* &
        # TODO: cell{pos,span} are wxGridBagSizer-only and required in it, this is too lax
        [xrc:p="o"] element cellpos  {_, t_position }* &
        [xrc:p="o"] element cellspan {_, t_size }* &
        [xrc:p="o"] element flag     {_,
            xsd:string {
                pattern = "(wxLEFT|wxRIGHT|wxTOP|wxBOTTOM|wxNORTH|wxSOUTH|wxEAST|wxWEST|wxALL|wxGROW|wxEXPAND|wxSHAPED|wxSTRETCH_NOT|wxALIGN_CENTER|wxALIGN_CENTRE|wxALIGN_LEFT|wxALIGN_RIGHT|wxALIGN_TOP|wxALIGN_BOTTOM|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTRE_HORIZONTAL|wxALIGN_CENTER_VERTICAL|wxALIGN_CENTRE_VERTICAL|wxRESERVE_SPACE_EVEN_IF_HIDDEN)( *\| *(wxLEFT|wxRIGHT|wxTOP|wxBOTTOM|wxNORTH|wxSOUTH|wxEAST|wxWEST|wxALL|wxGROW|wxEXPAND|wxSHAPED|wxSTRETCH_NOT|wxALIGN_CENTER|wxALIGN_CENTRE|wxALIGN_LEFT|wxALIGN_RIGHT|wxALIGN_TOP|wxALIGN_BOTTOM|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTRE_HORIZONTAL|wxALIGN_CENTER_VERTICAL|wxALIGN_CENTRE_VERTICAL|wxRESERVE_SPACE_EVEN_IF_HIDDEN))*"
            }
        }*
    }

wxBoxSizer =
    element object {
        attribute class { "wxBoxSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize {_, t_size }* &
        [xrc:p="o"] element orient  {_, ("wxHORIZONTAL" | "wxVERTICAL") }* &
        (wxSizer_item | objectRef)*
    }

wxStaticBoxSizer =
    element object {
        attribute class { "wxStaticBoxSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize {_, t_size }* &
        [xrc:p="important"] element label {_, t_text }* &
        [xrc:p="o"] element orient  {_, ("wxHORIZONTAL" | "wxVERTICAL") }* &
        (wxSizer_item | objectRef)*
    }

wxGridSizer =
    element object {
        attribute class { "wxGridSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize {_, t_size }* &
        [xrc:p="o"] element rows    {_, t_unsigned }* &
        [xrc:p="o"] element cols    {_, t_unsigned }* &
        [xrc:p="o"] element vgap    {_, t_dimension }* &
        [xrc:p="o"] element hgap    {_, t_dimension }* &
        (wxSizer_item | objectRef)*
    }

wxFlexGridSizer =
    element object {
        attribute class { "wxFlexGridSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize             {_, t_size }* &
        [xrc:p="o"] element rows                {_, t_unsigned }* &
        [xrc:p="o"] element cols                {_, t_unsigned }* &
        [xrc:p="o"] element vgap                {_, t_dimension }* &
        [xrc:p="o"] element hgap                {_, t_dimension }* &
        [xrc:p="o"] element flexibledirection   {_, ("wxVERTICAL" | "wxHORIZONTAL" | "wxBOTH") }* &
        [xrc:p="o"] element nonflexiblegrowmode {_, ("wxFLEX_GROWMODE_NONE" |
                                                     "wxFLEX_GROWMODE_SPECIFIED" |
                                                     "wxFLEX_GROWMODE_ALL") }* &
        [xrc:p="o"] element growablerows        {_, t_list_of_numbers }* &
        [xrc:p="o"] element growablecols        {_, t_list_of_numbers }* &
        (wxSizer_item | objectRef)*
    }

wxGridBagSizer =
    element object {
        attribute class { "wxGridBagSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize             {_, t_size }* &
        [xrc:p="o"] element vgap                {_, t_dimension }* &
        [xrc:p="o"] element hgap                {_, t_dimension }* &
        [xrc:p="o"] element flexibledirection   {_, ("wxVERTICAL" | "wxHORIZONTAL" | "wxBOTH") }* &
        [xrc:p="o"] element nonflexiblegrowmode {_, ("wxFLEX_GROWMODE_NONE" |
                                                     "wxFLEX_GROWMODE_SPECIFIED" |
                                                     "wxFLEX_GROWMODE_ALL") }* &
        [xrc:p="o"] element growablerows        {_, t_list_of_numbers }* &
        [xrc:p="o"] element growablecols        {_, t_list_of_numbers }* &
        (wxSizer_item | objectRef)*
    }

wxWrapSizer =
    element object {
        attribute class { "wxWrapSizer" } &
        stdObjectNodeAttributes &
        [xrc:p="o"] element minsize {_, t_size }* &
        [xrc:p="important"] element orient {_, ("wxHORIZONTAL" | "wxVERTICAL") }* &
        [xrc:p="o"] element flag    {_, t_style }* &
        (wxSizer_item | objectRef)*
    }

wxStdDialogButtonSizer =
    element object {
        attribute class { "wxStdDialogButtonSizer" } &
        stdObjectNodeAttributes &
        element object {
            attribute class { "button" },
            platform,
            (wxButton | customClasses | objectRef)
        }+
    }